Measure fabric in metres
Distance in miles except of course when in Europe.
Temperature in Celsius
When shopping have gradually got used to kilos and grams, but tend to be a misch masch dependent upon what I am buying.
Height in feet and inches
Weight in stones and pounds (sounds much less than kilos). That being said, can never work out the American system of just pounds - all that dividing by 14 aint easy.
All very confusing but have long stopped converting things to "old" money - except the other day when I saw that a loaf of bread was in excess of £1 - spur to start baking my own again.

I find that for most purposes I adjust to the environment. So, when I'm abroad (except in the U.S.) I 'think metric'. Also, when shopping here in the U.K. I generally 'think metric'.

Like Sherry, I find that body weight in pounds is something I really can't adjust to, and for height my instinct is to think in feet and inches.

Ages ago, when I spent a year working in Germany, I even got used to buying coffee and a few other things in multiples of 125 g - a leftover from pre-metric days.

Fortunately for me, I can do either...in most cases. For me, I mention my height in feet and inches instead of m/cm. Our "petrol" (gasoline) is measured in gallons here, but I can convert. If I went to a metric country, I could make it without too much trouble.

As you all well know metric is the only
measure system in Argentina so when there´s something expressed in feet or pounds it´s difficult to convert it to our system.

Like Papo said, we use the metric system over here. We also use Celsius instead of Fahrenheit. I know 32º F is freezing, but if I see the temperature in Fahrenheit, even though I have an idea whether it's cold or hot, I need to convert it to Celsius to know exactly how cold or hot it is.

I'm definitely an 'old money' person. I can do some conversions in my head if I have to, but I can't do kilos to stones. I drive in miles, buy fruit and veg by the pound, and milk in pints, and as far as temperature goes, 28 degrees is below freezing.

I am fairly fluent in both systems.

When I was born, Australia used Imperial measures so I was brought up on pounds and ounces, feet and inches, pennies and shillings etc.

Australia went to decimal currency in 1966 when I was in Grade 4 and went fully metric the year I started high school (1970). So I learned metric for most of my school life although we still used the old system at home, cooking with pounds and ounces, calculating mileage on road trips etc.

Then I moved to California when I finished university, so I had to learn Imperial all over again. Five years later, we moved back to Australia and back to metric.

In the meantime, when I was living in California and writing letters home to Australia, I was making conversions for the benefit of my correspondents - e.g. I would write things like "my mother-in-law lives 15 miles (24 kilometres) from us". When I moved back to Australia, I did the same again but in reverse when writing to the American friends and relatives.

As a result of this to-ing and fro-ing, I am fairly adept at converting back and forth between the two systems.

We get quite a lot of Mormon missionaries over here and it is not unusual to see the new arrivals puzzling over the meat prices in the deli/butcher section of the supermarket, trying to work out how much to buy. I always help them.

Australia is fully metric but there are two things where we always seem to fall back to Imperial - the weight of babies and adult heights. You'll still hear people say "the baby was 10 lbs 11 oz" (ouch) or "he's almost 6 ft 7" (wow, that's tall).

Overall, I prefer metric. There's no denying the maths is much easier when everything is based on 10's as opposed to Imperial's haphazard numbers (16 oz = 1 lb, 14 lb = 1 stone etc).

Being Australian, born since '66 and an engineer I think in metric/SI. With one curious exception. While at high school I played a table top game that often required you to estimate ranges in inches (being published overseas). Therefore, I can estimate in inches up to 30" but am useless at estimating feet. With all metric I'm fine.

Sometimes I think we don't go far enough with SI units. Cars are serviced for example at so many 1000s of km. Don't you mean megametres?

only when i go to europe

Metric measurements do not seem to have passed into ordinary colloquial use.

I've yet to hear anyone say, 'Please would you move your car forward a metre, so that I can get my car out' or 'The village is only ten kilometres from here'.

I read a very good little article by Peter Hitchens in the Mail on Sunday yesterday on metrication, and his comparison with speaking a foreign language said it all to me. It's like forcing everyone in Britain to speak French or German or be prosecuted. Very democratic.

I've just come back from a holiday in California and we discovered that one of the popular topics of conversation over there is the price of petrol (or gas). Everyone wanted to know what we paid for petrol here in Australia. Which isn't easy because we pay for petrol by the litre, so you have to convert the litres to gallons, and the Aussie dollar to the American dollar.

Yesterday, petrol price reached a record high of $1.65 per litre here in Perth. Convert litres to gallons (multiply by 3.7843)- means we are paying $AUS 6.24 per gallon. At today's exchange rate, that $US 5.92.

In Australia? There you go, we're paying nearly double! And people think Britain is a civilised country- we're being done apparently with inspiration from Zimbabwe's regime. But I don't think you all sold the gold reserves when they were at their lowest price and need to get it all back in any way you can like we are.

I know what I weigh in kilos and stones. I can do kilometres with a bit of thought - I can almost do Celsius. Imperial still feels more 'natural'. Oh, and money? I upset the people at work by pointing out that they've just paid nine bob for a Twix ;-)

Don't get me started on petrol. My bike has a petrol tank the size of a Brazil nut. Six pounds fifty three it took this morning. Find me someone to bite!

A major reason they rearrange measurements from time to time is to hide or cause price rises. The Twix example is over 12 times inflation since say 1971 when it changed, when it was probably less than 9 old pence but most snack food was about the same in pence as it is now in shillings if you convert it.

Petrol going into litres has covered it up very nicely as people would have a heart attack paying £5 a gallon as advertised but somehow think £1.10 a litre (£5 a gallon) is OK. Smoke and mirrors, until you get your bank statement.